LS1 in my 89 formula
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TECH Apprentice
Joined: May 2004
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LS1 in my 89 formula Well, I just ordered a set of weisco forged high compression pistons, eagle forged H beam rods, federal Mugal bearing kit, Arp complete engine bolt kit, and a GM gasket kit for the trans am. I figured since i am just using the aluminum block that was in I could build a 408 on the side with the iron 6.0 block i have. I was wondering who if anyone makes headers for a 3rd gen swap? I wanna run the edelbrock carb intake with their control box and a demon 850cfm carb so how would i get the electric fuel pump to work? Its a 5 speed car so would it be easy to put a t56 in, if not what would i need to do to get it in? I know ill need a new rear end since the third gen's are worse off rear end wise then a fourth gen, does moser make a nice set up? THis project is gonna take awhile but when its done it will scream
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Joined: Jun 2004
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From: Itasca, IL
Fbodymotorsports.com has conversion headers for Third gen F-bodies. There not LT's but nobody makes LTs for this conversion because its nearly impossible. The headers on Fbody motorsports are like $700 
. I personally used JBA shorty headers that my friend sold me for 75 bucks. They clear and its not $700, but If you have the dinero might as well. Im not sure if the conversion headers allow you to use a thirdgen y-pipe or not, but Im just havin a local shop make me a custom ypipe from the headers to a third gen cat back.
. I personally used JBA shorty headers that my friend sold me for 75 bucks. They clear and its not $700, but If you have the dinero might as well. Im not sure if the conversion headers allow you to use a thirdgen y-pipe or not, but Im just havin a local shop make me a custom ypipe from the headers to a third gen cat back. 
11 Second Club
Joined: Aug 2004
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From: Liberty SC
We Have Longtubes for Third gen LS1 swaps, www.hawksthirdgenparts.com, check out our blown firehawk with a magnacharger
all thirdgen ls1 swaps have used 01-02 stock exaust manifolds cuz they flow just as good as shorties. never knew hawks thirdgen swap having longtubes. 
. I wonder how much those longtubes run.
. I wonder how much those longtubes run. 
Deranged Rat Fink
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From: Right here at my laptop, DUH!
I didn't see the longtubes for the thirdgen LS1 swap listed anywhere on the website , where are they at? I know you can't give me a price here(big no-no ffor nonsponsors to do that) but could ya shoot me a pm with the info?
2000+ stock manifolds have been shown to flow better than the shorty headers; and, you can even do a little porting on them to help them out more. 
I'm going to try putting Pacesetter LTs in with Hawks tubular K-member. Hopefully going to go in, in a few more weeks.
Nice to see another 89 Formula doing the swap. :rockon:
I'm going to try putting Pacesetter LTs in with Hawks tubular K-member. Hopefully going to go in, in a few more weeks.
Nice to see another 89 Formula doing the swap. :rockon:
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Joined: Jun 2004
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From: Right here at my laptop, DUH!
I've been trying to get in contact with bruce for a week or so , he's a tough guy to catch. I still need to get a quote from him on my harness.I'll ask him about the headers when I finally do catch up with him.
